Pros
Company offers decent pay, good benefits, and brand recognition. You will definitely learn a lot in a fast-paced environment and will meet very bright individuals. People end up staying at the company for awhile because it is comfortable in terms of stability, pay raises, and structure for advancement.
Cons
The culture and management are definitely the downfalls of Samsung. The culture will literally change you. It stifles creativity and fosters an environment where you merely do as your told. Each department is extremely siloed and even within departments team members will be very secretive of their work. Within the office, there is such little communication that you can even hear a pen drop. It is a very rigid and competitive culture. Let's just say it is not for the faint of heart. Those that put in longer hours at the office are considered more valuable to the company: all about face-time and not about efficiency. Although there are very bright individuals, a lot of them lack social norms, are unfriendly, and are not the types of people you would want to spend your work week with. Overall, you will learn at the company but it will come at the price of your overall happiness.